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No. 340,725. Patented Apr. 27, 1886.

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MACHINE GUN. N0. 340,725. Patented Apr. 2'7, 1886.

UNITED TATES PATENT fission.

\VESTM l NSTER,

MACHlNE GUN.

SPECIFICATIQN forming part of Letters Patent No. 340,725, dated April 27, 1886.

Serial No. 133,359. (No model.)

To aZZ whom, it may concern:

Be it known that I, THORSTEN NoRnnN- FELT, a subject of the King of Sweden, residing at 53 Parliament Street,in the city of est minster, England, have invented certain new and useful Improvements in Machine-Guns, of

which the following is a specification.

This invention has for its object improe ments in machine-guns or guns in which barrels arranged side by side in a frame are fed with cartridges, and in which reciprocating plungers thrust forward the cartridges into thebarrels and, after firing, withdraw the cartridgecases.

More especially my present invention relatcs to guns of the class in which a divided action-block is employed and in which the rear part of the action-block has a lateral movement imparted to it. This rear part carries the hammers and lock mechanism, and has chambers to receive the plungers at the time when they leave the rear of the barrels and retire from the fore part of the ilCllOll-l)lOCl(. According to my present invention I make this fore part of the action-block also movable in a direction to and fro laterally, and I call it the cartridgecarrier. hen the plungers have retired from the recesses in the cartridge-carrier it makes a lateral movement and places its trough-like recesses beneath the chambers of the magazine. Cartridges then fall in, and the recesses being thus supplied the cartridge-carrier returns and brings these cartridges into a line with the barrels. The plungers also I now form in one piece with the cam-plate, the whole forming what I term the breech-block.

The extractors are held in position by the firing-pins passing through holes drilled in lugs on the extractors, the said holes being drilled in the direction of the length of the extractor. By this means I do away with the small pins usually employed, at the same time rendering it very simple to replace a broken extractor.

The firing-pins are formed with gib-heads, for the purpose of checking the action of the powder-gas in case of faulty ammunition.

Instead of placing the trigger-comb on the top of the actionblock, I place the triggercomb on the spring-bar underneath the actionblock.

The cartridgecarrier is made to run upon the center crosspiece and upon the actionblock. studs upon the breech-block.

These improvements are illustrated by the drawings annexed.

Figure l is a plan, and Fig. 2 is a side elevation,ofa machinegun constructed in accordance with this invention. Fig. 3 is a sectional plan toalarger scale. The section is taken on the line L M in Fig. 5. Fig. 4. is also a sectional plan. The section is taken on the line N O in Fig. 5. Fig. 5 is a longitudinal and vertical section taken on the line A B in Fig. 3. Fig. 6 is a longitudinal and vertical section taken on the line C D in Fig. 3. Figs. 7, 8, and 9 are transverse and vertical sections taken on the lines E F, G ll, and I K of Fig. 3, respectively.

In these figures, a. a represent the barrels; I), the middle cross-piece of the frame; 0, the cover; (I (1, parts of the frame; 0, the actionblock; f, the breech-block; y, the spring-bar fixed to the action-block; ii, the bottom plate fixed to the frame; i, the cartridgecarrier; j, the extractors; 7. the firing-pins; Z, the hammers; m the action-bar; a, the action-lever; 0, a friction-roller on the action-lever; p, a cam-slotin the breech-block; r, thehamtlever; s, the hammer-spring; L, the trigger-comb spring. The barrels a are inserted through the front cross-piece of the frame and are fixed in the middle cross-piece, I). The cover 0 is hinged or attached to the cross-piece b and supports the magazine.

0 are openings in the cover by which the cartridges enter the gun from the magazine.

0 are lugs on the cover which expel the cartridge-cases from the recesses in the cartridge-carrier as the cartridgecarrier moves laterally.

The principal operative or moving parts of the gun are the action-lever, the action-block, the breeclrblock, the cartridge carrier, and the parts which these carry. The movement of all the other parts is derived from the handlever 1' and action-lever a, which are fixed together, and the action-lever oneratcs bv means It receives its motion from inclined of the friction-roller 0 upon it and the tail n on the other side of its center of motion. The action-block c has recesses in it in which the hammers Z and the hammer-springs s are containcd. The hammers have lugs Z, by which they are forced back, and other lugs, 'l, which engage with the trigger-comb and prevent the hammers advancing until the parts are in position for iiring. The action-block has also other recesses which receive the plungers of the breech-block when they retire.

To the rear of the action-block the springbar g is fixed. It has in it a recess, 9, which the tail a of the actiolrlever enters. The ac tion-block receives a short transverse move ment over the distance requisite to cause the ham merrecesscs and the plunger-recesses in it alternately to be aligned with the barrels. .W'hen the handle 0- is moved from front to 'rear (which is the movement for opening the breeehcs of the barrel) the tail it, soon after the commencement of the movement, enters the recess and the actionblock then moves to the left with the tail a of the lever; but when the position represented in Figs. 3 and 4 is arrived at the tail it leaves the recess and the action-block does not move during the remainder of the stroke of the action-lever. So during the forward motion of the hand-lever the action-block does not move until theparts reach the position shown by the Figs. 3 and t, the tail n then enters the recess 9 and the action-block is moved; but after a time the tail a escapes on the other side from the recess, and the action-lever completes its stroke while the action-block is stationary.

The trigger-comb m is carried in guides on the under side of the spring-bar it can slide in these guides, and a spring, I, presses it toward the left.

m are lugs on the triggerromb to engage with the lugs Z of the hammers. in is another inclined lug on the trigger-comb, with which the tail a of the action-lever and also a lug, f on the brcech-block comes into contact.

The breech-blockfconsisls of a cam-plate, in which is the slot p and plungers formed on this plate. The movement which the breechblock receives is longitudinal. It is imparted by the roller 0 traversing the slot j). The plungers are thus alternately moved up to close the breech ends of the barrels and withdrawn into the plunger-cavities of the actionblock. In consequence ot'the form of the cam slot 1) the brcech-block remains stationary for a time, while the handle 9' is drawn rearward until the parts assume the positions indicated in Figs. 3 and t. The plunger-cavities are then in place to receive the plungers and they retire into them, the movement of thebrecchblock continuing during the remainder of the stroke of the hand-lever. Similarly during the forward stroke of the hand-lex 'er r the v breech-block advances during the earlier part of the stroke until the plungers reach the barrels, and then the actioirblock is moved. laterally, as already described, thereby supporting the plungers and placing the hammers behind 4 them.

The extractors j and the firing-pins 7; are both carried by the plungers ol' the breech block. The extractor is a steel blade with a hook-head to engage with the ilange of the cartridge, and with lugs upon it entering a re cess in the plunger. The firing pins pass through holes in the lugs ol' the extractors, and so the extractors are held in place. The tiringpins it are simply inserted into passages in the plungers and are held by the lugs on the extractors, but they are free to move longitudinally. The rear edge of the breech-block is marked f. It is this which forces back the hammers by operating against the lugs Z.

/"is a lug 011 the breech-block, which, operating against the lug in, insures the movement of the triggercomb.

f and f are inclined lugs on the breechplate which operate the cartridge-carrier.

The cartridge-carrier i has trough-like recesses in it to receive the cartridges and the plungers of the breech-block. These recesses are open at the bottom, except at the lore end, to allow the empty cartridgecases to fall through. There is an incline, 1?, on the cartridge-carrier, and with this the incline f comes into contact as the ln'eech-block completes its rearward movement, and so the cartridge-carrier is moved to the left, bringing its recesses beneath the opening 0 in the cover, and then cartridges fall into them. There is another incline, i, on the cartridge-carrier, and against this the incline/ on the breechblock acts as the breech-block commences its forward movement, and by it the cartridge carrier is moved to the left and cartridges carried into position to enter the barrels.

The action ofthegun isas follows: Supposing the gun to have been just fired, the backward stroke ol'the hand-lever 1' first, by means of the tail end a of the actioirlever engaging in the recess g,carries the actioirbloek 6 over to the left. The parts thus reach the position indicated by Figs. 3 and 4-. The tail end a then passes out of the recess 0 and the action-block remains stationary, while the ln'eech-ldock f retires from the barrels and its plungers enter these recesses in theaction-block. By means ol'the extractors the plungers in retiring draw the cartridge-cases out of the barrel back into the cartridge-carrier The breech-block in retiring also pushes back thehannners Z against the resistance of thehammer-springs until the inclined studs Z on the hammer come against the correspondinglugs,m, on the trigger-comb. The trigger-comb yields to the right, allowing the lugs l to pass, and then immediately returns by the action of the spring '6; or if the spring fail the lug f, acting against m, produces a like result. As the breech-block completes its rearward movement by means of its lug f, it pushes the cartridge-carrier over to the left. The lugs c on the cover standing in the path then prevent the cartridge case from re- ICO aEsrAvAlLAsLE cor f 1 maining'iu the cavities of the cartridge-carrier and causes them to pass out through the inelined openings in the bottom of the carrier if they have not previously fallen through by the operation of gravity alone. Finally the empty reeessesin the eartridgeearrier come to coincide with openings in the cover and fresh cartridges descendinto them. The handle r has now reached its real-most position, and if it be desired to fire the gun it is again moved forward. The first result is a forward movement of thebreech-block,and the lngf upon it acts against the incline i on the cartridge-carrier and moves this to the right thereby bringing the cartridges opposite the barrels. The plungers now advance into the recesses of the cartridge-carrier and thrust the cartridges before them into the barrel. The position of the hand-lever shown by Figs. 3 and 4 is now again arrived at. The further forward movement of the hand-lever carries the action-block to the right and brings the hammers behind the firing-pins in the plungers, the hammers, however, being still retained by the trigger-comb. The tail n of the action-' lever now again escapes from the recess 9, and the action-block remains stationary while the tail a, coming into contact with the lug m", moves the trigger-comb to the right, liberating the hammers in turn and allowing them to strike upon the firing-pins. The cartridges in the barrels are thus fired and the cycle of operation is complete.

\Vhat I claim is- 1. The combination of the transversely moving cartridgecarrier, provided with recesses for the cartridges the reciprocating plungers acting upon the cartridges in the recessesof the cartridge-carrier to advance them, and the 1 cess for engagement by the action-lever, and

the trigger-comb having the projection for engagement by the tail end of the action-lever, the ham mers the hammersprings, and the engaging-lugs on the hammer and the triggercomb, substantially as and for the purpose set forth.

THN; NORDENFELT. \Vitnesses:

J OHN DEAN, G130. J. B. FRANKLIN,

130th of 17 Gra'cechm'ch St, London. 

